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drm/radeon/dpm: require rlc for dpm 

The rlc is required for dpm to work properly, so if
the rlc ucode is missing, don't enable dpm.  Enabling
dpm without the rlc enabled can result in hangs.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-08-06 13:34:00 -04:00
parent f61d5b4677
commit 761bfb9998
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/radeon/radeon_pm.c
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@ -1176,7 +1176,10 @@ int radeon_pm_init(struct radeon_device *rdev)
case CHIP_VERDE: case CHIP_VERDE:
case CHIP_OLAND: case CHIP_OLAND:
case CHIP_HAINAN: case CHIP_HAINAN:
if (radeon_dpm == 1) /* DPM requires the RLC */
if (!rdev->rlc_fw)
rdev->pm.pm_method = PM_METHOD_PROFILE;
else if (radeon_dpm == 1)
rdev->pm.pm_method = PM_METHOD_DPM; rdev->pm.pm_method = PM_METHOD_DPM;
else else
rdev->pm.pm_method = PM_METHOD_PROFILE; rdev->pm.pm_method = PM_METHOD_PROFILE;